How do I stop duplication of photos/songs in nokia lumia 520?

hello...these days i m facing the problm of duplication in my nokia lumia 520...the pictures and songs are automatically coping day by day...what is the problm n how to remove??reply as early as possible...thankyou...

hello...these days i m facing the problm of duplication in my nokia lumia 520...the pictures and songs are automatically coping day by day...what is the problm n how to remove??reply as early as possible...thankyou...

I think the only solution to this is by hard resetting your phone. I also faced same problem of photo and music file replication on my Lumia 520, and this problem got solved when I did a hard rest. You can back up your all photos, videos and other data on to your SD card.
Good luck!